We have been using super duper to do nightly smart updates of the server. I want to now rotate that external drive with an identical one on a weekly basis and take it off site.

I've named the volumes on each backup drive the same. But SD is not considering them identical as it is using something more than volume name. I want to be able to use a single nightly script and then just simply swap the drives weekly - is there a way to do this? Will the smart update algorithm handle it?